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- Comportamento Sísmico de um Pavilhão Pré-Fabricado de Betão ArmadoPublication . Batalha, Nádia; Rodrigues, Hugo; Varum, Humberto; A. L. Fernandes, Paulo; Sousa, RomainOs pavilhões pré-fabricados de betão armado são muito comuns no parque industrial em Portugal, tendo mostrado um desempenho por vezes deficiente em sismos recentes tanto ao nível dos elementos estruturais como não-estruturais. Torna-se importante a sua caraterização a fim de conhecer melhor o seu comportamento sísmico. Os pavilhões industriais de um piso, com uma estrutura porticada de vigas e pilares, com ligação encastrada na base e rotulada no topo, sobre a qual vigas de secção variável são posteriormente apoiadas é a solução mais recorrente em Portugal. Nesse sentido, este trabalho aborda o comportamento sísmico de um pórtico de um edifício industrial-tipo existente, com estrutura em betão pré‐fabricado. Essa caracterização é feita através de análises estáticas não lineares (pushover) e análises dinâmicas. Os resultados obtidos são apresentados e discutidos.
- Seismic precast. Seismic performance assessment of existing precast industrial buildingsPublication . Furtado, André; Arêde, António; Rodrigues, Fernanda; Rodrigues, Hugo; Vitorino, Hugo; Varum, Humberto; Ostetto, Liana; Batalha, Nádia; Fernandes, Paulo; Sousa, Romain; Silva, VítorPast seismic events exposed important fragilities in precast reinforced concrete buildings and highlight the need to undertake measures to mitigate future losses.The study presented identify potential structural and nonstructural fragilities of the Portuguese building stock and provide guidance to reduce the associated direct and indirect socio-economic impact
- Assessment of the Seismic Behavior of a Precast Reinforced Concrete Industrial Building with the Presence of Horizontal Cladding PanelsPublication . Ostetto, Liana; Sousa, Romain; Rodrigues, Hugo; A. L. Fernandes, PauloThe latest earthquakes in Europe exposed some critical problems in the connections of cladding panels in industrial precast reinforced concrete (PRC) structures. These connections did not perform as desired, causing the panels to fall, leading to significant nonstructural damage that resulted in the loss of human life and significant socio-economic impacts due to the interruption of business. Furthermore, in addition to the behavior of the cladding system itself, it is still not clear to what extent it can influence the overall seismic performance of the main structure. Making use of a simplified macroelement, the present study assesses the seismic performance of commonly employed cladding-to-structure connections, as well as the interaction of cladding panels with industrial PRC buildings. The analyses were carried out considering a PRC building representative of a Portuguese industrial park, studied with and without cladding panels. The seismic behavior of the structure was assessed considering both nonlinear static and dynamic procedures.
- Influence of Beam-to-Column Connections in the Seismic Performance of Precast Concrete Industrial Facilities, Structural Engineering InternationalPublication . Rodrigues, Rodrigo; Vitorino, Hugo; Batalha, Nádia; Sousa, Romain; Fernandes, Paulo; Varum, HumbertoPast earthquakes have brought attention to the poor performance of precast reinforced concrete structures, especially relating to beam-to-column connections. The evaluation of different methodologies for the analysis of beam-to-column connections in industrial buildings is important. In the present work numerical analyses developed allowed the study of the effect that different story heights and connection properties have on frequencies, drifts, seismic coefficients and connection sliding. The results showed that the friction between concrete elements and the consideration of neoprene have a small impact on the drift demands in the columns and the seismic coefficients of the structures analyzed; on the other hand, the effect of steel dowel on the drift demands and seismic coefficients is significant. The comparison of models with different properties and connections allowed a better understanding of the parameters that affect the seismic behavior of precast reinforced concrete buildings the most and provide indications for building more accurate and efficient numerical models.